Insolar Blockchain provides multi-zone security: network segments / domains can run in different styles (e.g. isolated / private, connected, open, and arranged in different hybrid combinations). We​ ​employ​ ​a​ ​wide​ ​range​ ​of​ ​measures​ ​and​ ​take​ ​all​ ​the​ ​necessary​ ​precautions​ ​in​ ​addition​ ​to​ ​the inherent​ ​security​ ​of​ ​the​ ​blockchain​ ​technology​ ​itself:
Hash sum of each operation;
Hash sum of pulse data block, where every pulse carries a new entropy / seed;
Node signatures and network participants;
Session keys for network interaction between nodes.
Group signatures in group operations can be replaced by the aggregation of individual signatures. In this case, the implementation and storage of individual signatures involves extra costs.